62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
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/**
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Copyright © 2018 Pauli <suokkos@gmail.com>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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#pragma once
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#ifdef _MSC_VER
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#include <windows.h>
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#else
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#include <pthread.h>
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#endif
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#include <stdlib.h>
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/*! \file dfhack_llimits.h
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* dfhack specific lua porting header that overrides lua defaults for thread
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* safety.
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*/
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#ifdef _MSC_VER
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typedef CRITICAL_SECTION mutex_t;
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#else
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typedef pthread_mutex_t mutex_t;
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#endif
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struct lua_extra_state {
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mutex_t* mutex;
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};
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#define luai_mutex(L) ((lua_extra_state*)lua_getextraspace(L))->mutex
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#ifdef _MSC_VER
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#define luai_userstateopen(L) luai_mutex(L) = (mutex_t*)malloc(sizeof(mutex_t)); InitializeCriticalSection(luai_mutex(L))
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#define luai_userstateclose(L) lua_unlock(L); DeleteCriticalSection(luai_mutex(L)); free(luai_mutex(L))
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#define lua_lock(L) EnterCriticalSection(luai_mutex(L))
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#define lua_unlock(L) LeaveCriticalSection(luai_mutex(L))
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#else
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#define luai_userstateopen(L) luai_mutex(L) = (mutex_t*)malloc(sizeof(mutex_t)); *luai_mutex(L) = PTHREAD_MUTEX_INITIALIZER
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#define luai_userstateclose(L) lua_unlock(L); pthread_mutex_destroy(luai_mutex(L)); free(luai_mutex(L))
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#define lua_lock(L) pthread_mutex_lock(luai_mutex(L))
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#define lua_unlock(L) pthread_mutex_unlock(luai_mutex(L))
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#endif
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